Reproduction, Heredity, Variety in fitness of population, and variety in characters among the population are all four conditions for natural selection.
Is this a fill in the blank question if so holla at me and I'll help
Answer:
Increases.
Explanation:
There are 10 squirrels increases per generation if the birth rate is 50 squirrels and a death rate is 40 squirrels. There is slow increase occur in the population of squirrel due to more birth rate as compared to death rate. If the birth rate is equal to death rate, no increase occur in the population while on the other hand, decrease occur in the population, if the birth rate is lower than death rate so according to the given data, the population of squirrel increases.
Answer:
C. Beak size is an inherited trait in the finch population under study.
D. Birds that could eat larger, tougher seeds survived and reproduced during the drought.
E. Beak size varies among the birds in the finch population under study.
Explanation:
The presence of genetic variations among the individuals of a population is required for natural selection to be operative. Natural selection targets the beneficial genetic variations present in the population. Natural selection refers to the differential reproductive and survival success of organisms of a population due to some beneficial genetic traits. These organisms with beneficial genetic traits are able to survive and leave more progeny under prevailing conditions.
If the natural selection has occurred in the ground finch population for the beak size, the beak size should be a genetic trait since natural selection works on genetic traits only. The finch population should have variations with respect to the beak size. The finches having the larger beak size that enabled them to feed on larger, tougher seeds should have higher survival and reproductive fitness during the drought.
Under these conditions, natural selection would favor the finches with larger beak size and would eventually result in an increase in the average beak size of the future generations.
Protista:
This is a kingdom that compromises mostly single-celled organisms (such as: Protazoa)